. The principles of physics. es-sary to raise a bucket of coalweighing 40 k ? 23. Through how many me-ters must the force act to raise the bucket from a cavity 10 m p deep ? 24. The truck (Fig. 80) is a lever; the fulcrum is at the axle M of thewheels. AB represents the line of direction of the load, the directionin which the resistance acts; and C D represents the direction in whicha force acts to produce equilibrium in the load in its present What represents the force-arm ? 6. What represents the resistance-arm ? c. The force required to support the load is what part of thel
. The principles of physics. es-sary to raise a bucket of coalweighing 40 k ? 23. Through how many me-ters must the force act to raise the bucket from a cavity 10 m p deep ? 24. The truck (Fig. 80) is a lever; the fulcrum is at the axle M of thewheels. AB represents the line of direction of the load, the directionin which the resistance acts; and C D represents the direction in whicha force acts to produce equilibrium in the load in its present What represents the force-arm ? 6. What represents the resistance-arm ? c. The force required to support the load is what part of theload ? d. Would greater, or less, force be required if it were applied atE instead of C ? Why ? e. How may the load be supported vyithout anyforce applied to the lever, the legs not touching the ground ? /. Wouldits equilibrium in this position be stable or unstable ? Why ? g. Supposethe feet F to rest upon the ground, how would the pressure of the load bedistributed between the feet and wheels ? h. Which is better suited for. 114 iSrOLAR DYNAMICS. moving heavy burdens, a vyheelbarrow or a truck ? Why ? i. Supposethat C D represents the supporting force and C G the force employed inmoving the load, how would the intensity and direction of the singleforce that accomplishes both results be found ? 25. A plank 12 feet long and weighing 24 pounds is supported by two
Size: 2169px × 1152px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectphysics, bookyear1895
